By-pass valve.



D. P. GOSLINE.

BY-PASS VALVE.

APPLICATION FILED FEB. 9, l9l4 1,233,340., Patented July 17, 1917.

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BY-PASS VALVE. APPLICATION men rams, 1914.

1,233,34U Patented July 17, 1917.

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BY-PASS VALVE.

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Specification of Letters Patent.

Patented July 17, 1917.

Application filed February 9, 1914. Serial No. 817,659.

To all whom it may concern:

Be it known that I, DANIEL ,P. GosLIuE,

a subject of George V, King of Great Britain and Ireland, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in By-Pass Valves, of which the following is a specification.

The purpose of my invention is to provide a single valve which may be used in positions where a variable quantity of water is to be delivered froma constant supply for any purpose which requires a variable or regulated quantity, for example, a mechanism for humidifying air where. conslderable water is needed if the air is dry and much less when the air is moist. As the water comes from a constant supply provision must be made for disposing of the surplus water by means which will give instantly an added outlet when needed. For this purpose l have provided a Y-shaped valve casing provided with two seats one in each branch of the Y and a double-faced shutter or valve pivotally mounted to close against either seat or to partially close either branch of the Y so that the flow through both branches may be adjusted as occasion may require. automatically operable by means of a thermostat, humostat or some other similar automatic mechanism such as is found on the market, so that the condition of the air in the delivery room shall be always under automatic control rather than under hand control, which of course is not accurate.

Such is the chief object of my invention, but

it will be seen from the description of the device embodying it, shown in the drawings, 40 that it may be otherwise used.

My invention will be understood by reference to the drawings in which it is shown in its preferred for Figure 1 is a front elevation of the valve casing showing the supply pipe, the delivery pipe and the by-pass pipe with-my apparatus attached thereto.

Fig. 2 is a vertical section on the line 22 of Fig. 1.

Fig. 3 is a horizontal section on the line 3-3 of Fig. 2, and

Fig. 4 is a vertical section of the valve casing showing the valve or shutter, the valve seats and the passages controlled thereby.

A is a pipe connected with a suitable su ply, for example, a pump or other li e Preferably such valve should be 03 supported in suitable bearings at the junction of the two arms of the Y, one of these bearings comprising a stu-fling box through which the pin projects so as to be operated from the outside by a lever or the like.

Within the two arms of the Y-shaped valve casing are valve seats I) and 0. These valve seats are in planes radial from the pin d and cooperate one with each side of the valve D so that the motion of the valve in either direction from its central position will close one port as much as it opens the other and when the valve lies against either valve seat it will shut off the passage of water from the pipe A to that arm of the Y. Thus if a full supply of water is to be delivered through the pipe B to the humidifying apparatus or other point, the valve D is closed against the valve seat 0. and all the water can pass into the pipe B. If, however, it is desired to cut off the water supply from the pipe B the valve D is closed against the valve seat 6 in which case the entire water supply passes to the pipe C and from thence to the waste wherever it may be. When the valve stands in the position shown in Fig. 4:. it will be noted the pipe A is divided substantially equally and a portion of it passes through each pipe B and C. By adjusting the position of the valve, therefore, the supply to the pipe B may be adjusted as occasion may require. The positions of the valve are regulated by itutomatic means connected thereto as folowsz- The means employed for turning the pin d and hence moving the valve comprises a cap e mounted on one endvof the shaft (2 which cap carries an arm E made in the form of a pointer to indicate the position of the valve within the casing, and a second that the supply through arm E which is slotted at e in order to be adjusted automatically in the way now to be described. I

As a means for automatically changing the position of the valve I use a slide comprising two cylinders 'F,--F within' each of which slides a piston F F one attached to each end of a plate or flat rod Ft. Each cylinder is closed at its outer end by a cap F and into each cap passes a tube f,' ,th1sopposite direction.

The slot 6 in the arm E is for the purpose of connecting the valve p111 d to the fiat plate or rod F by means of the arm E so that the valve may be moved thereby. For this purpose a threaded pin f projects from the rod F through the slot 6 and-a nut is screwed onto the end of-the pin 7, thus holding the parts together. Preferably a friction ring 6 lies between the pin 6 and the-walls of the slot e To serve as guides for the piston rod or plate F I prefer to groove the rear side of this plate as at f and provide a plurality of guide pins 7 the tips of which are squared to run easily in said groove, these pins passing through the rear wall of the cylinder F.

In practice and as shown the cylinder is mounted in any suitable way on a plate G which lies between the cylinder and the valve casing A, B and C, and this plate may have a scale 9 upon it in such relation to the endof the pointer E that it will indicate the position of the valve D which of course cannot be seen.

Adjustable stops 7 carrying check nuts f are provided in the caps F to adjust the possible throw of the piston in either di-' rection if desired.

The valve in this case is a double-faced valve, the two faces being alike and the two valve seats being alike, each adapted to seat the valve practically watertight or otherwise if desired.

This valve and the mechanism by which it is controlled has been designed by me especially for use in supplyingwater to an air humidifier of a character now well known,

andit is especially intended to be used with a humostat of a kind well known in the market (such for example as the Johnson .whichpressure will move the piston F and so partially or entirely close the valve -or shutter D against the seat I), thus cutting off some or all of the water supply from the pipe B and diverting it through the by-pass C.

When the moisture in the room containing the humidifier becomes less than the stipulated percentage, the pressure at f is automati-- cally shut off and pressure is applied to the pipe f, when the reverse of this operation takes place and a wider opening is provided for the pipe B, the'openin'g to the pipe being reduced.

It is evident, however, that an apparatus of this character has other uses and that it may be used for steam or other liquid as well as for water. Moreover, I do not mean to limit myselfto the precise form, ofapparatus shown in the drawings.

What I claim as my invention is A device of the kind described comprising a Y-shaped valve casing, a shaft carrying a valve mounted in the fork of said Y, whereby said valve will be adapted to control the entrance to both branches of said Y, an arm mounted on said shaft, operating means comprising a slide connected intermediate its ends with said arm, means for guiding said slide, a piston secured to each end of said slide, separate cylinders within which said pistons are located, respectively, each cylinder having a fluid pressure inlet at its outer end, whereby pressure applied at either inlet will move the corresponding piston thereby to open or close the corresponding branch, and means in the head of each cylinder to adjust the length of stroke 95 of the corresponding piston.

- DANIEL P. GOSLINE. Witnesses:

Gnoner. O. G. COALE, M. E. FLAHERTY. 

